#-*- coding: utf-8 -*-
f = open ( "teste.txt" , "w" )
s = " t r e t a "
for k in range (10) : f.write ( s ) ; f.write ( "\n" )
f.close( )
f = open ( "teste.txt" , "r" )
f . seek ( 5 )
print f.tell ( )
x = f.read (10)
print x
c = 0
for line in f :
	print "{0}:".format(c),line
	c += 1
f.close( )
with open ( "teste.txt" , "r" ) as f :
	x = f.readline( )
	if x == 'treta\n' : print "voila"
